BLM18BA470SN1D Filters

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Ferrite beads and chips are small, type-specific components that are used for RF filtering of electronic subsystems. They act as high-frequency filters, blocking or attenuating unwanted signals that can cause interference. The BLM18BA470SN1D is one type of ferrite bead chip that is used for radio-frequency (RF) interference and emission reduction. This component is typically used in power supply line applications such as gigabit Ethernet networks, USB ports, and LED lighting systems, as well as high-frequency antenna systems.

In terms of construction, the BLM18BA470SN1D ferrite bead chip is made up of a ferrite core that is wrapped by copper wire. Inside the core, alternating magnetic flux and electric current cross over, which helps to reduce electromagnetic interference. This bead is coated with a resin material to protect against external shock and vibration, and as a result, the BLM18BA470SN1D is highly durable and reliable under extreme temperature and vibration conditions.

When it comes to the performance of the BLM18BA470SN1D, the component is highly effective in reducing EMI and RFI. The ferrite bead filter operates at a range of -55°C to +120°C and has a low insertion loss of 0.7dB at 1.8GHz, a low return loss of 12dB, and a high attenuation level of 26dB at 3GHz. This ensures that unwanted signals are effectively blocked and that the signal quality is not compromised.

In terms of applications, the BLM18BA470SN1D is primarily used in power supply line applications, specifically for gigabit Ethernet networks, USB ports, and LED lighting systems. The ferrite bead filter also finds applications in high-frequency antenna systems, as well as in consumer electronics equipment such as smart phones, audio amplifiers, and digital television receivers. In these applications, the component is used to reduce the emission of electromagnetic interference that can interfere with other electric equipment in the vicinity.

The working principle of the BLM18BA470SN1D ferrite bead chip is based on the concept of electromagnetic induction. When current flows through the ferrite core, alternating magnetic flux is generated, which in turn produces a concentric electric field around it. This electric field then interacts with the current passing through the core, generating a magnetic force that acts against the current flow and effectively blocks any unwanted electromagnetic interference from external sources.

Overall, the BLM18BA470SN1D ferrite bead chip is an effective component to reduce EMI and RFI in a number of applications such as power supply lines, circuit boards, and antenna systems. The component is highly tolerant against extreme temperatures and vibrations, has a low insertion loss at 1.8GHz, a low return loss, and high attenuation levels. Its working principle is based on the concept of electromagnetic induction, where a concentric electric field interacts with the current passing through the ferrite core, generating a magnetic force that acts against the current flow.

The specific data is subject to PDF, and the above content is for reference